Four very large metal plates are given charges as shown in figure. The middle two are then connected through a wire. Find the charge that will flow through the wire.

Options

A. `5Q` from `A to B `
B. `5Q//2` from `A to B`
C. `5Q` from `B to A`
D. no charge will flow

Answer

A

Explanation

a. Distrinution of charge before the wire is connected is shown in figure.
On connecting with the wire, `5Q and -5Q` will get neutralized. ltbrlt Hence, 5Q charge will flow from A to B.